Swimmers in warm open water at an UltraSwim 33.3 event in Greece

THE ULTIMATE NON-stop CHALLENGE AWAITS

Big ultra-marathon swim challenges like the English Channel can be very difficult to organise, often with long waiting lists, uncertain weather windows, or expensive and complicated solo organisation costs. Whether your aspiration is to take on an iconic Channel swim in the future, or you relish the idea of an ultra-marathon challenge, without the hassle of organising it, UltraSwim 33.3 has one big swim extra option added to just one of each year's events.

In 2027 the ULTIMATE option add-on will be held at the #19Switzerland for Léman hope event on Lac Léman. A double-crossing of Lac Léman (aka wrongly Lake Geneva!) from Lausanne-Evian-Lausanne (25km) during #19SWITZERLAND 23-26 July 2027 - with the long swim planned normally for the second or third day (with the Friday-Sunday reserved as the possible window).

ULTIMATE: WHAT WE WILL PROVIDE

Planning, weather, set course, delivery
A dedicated ULTIMATE co-ordinator / Race Director
Personal support boats with skipper, fuel included
Recce trip of the course
Live tracking
Timing and results
Medical cover on standby
Full medical check by our on site doctor
Precision Fuel & Hydration products for the swim
ULTIMATE preparation webinar
ULTIMATE pre-event briefing & onsite preparation session
Dedicated boat tracker and radio support on each boat
Remote monitoring of tracking throughout
Start and finish lines and course markers when required
Dedicated WhatsApp channel for swimmers and support teams, includes our Ambassadors' input where appropriate
ULTIMATE specific finisher medal / and prizegiving

ULTIMATE: WHAT YOU NEED TO PROVIDE

For the ULTIMATE option swim only, you need a support person who has some experience of supporting you or another marathon swimmer on a 5 hour + swim - in particular who has the knowledge to manage your regular feeding routine. A second person may also be on the support boat.

If you are unable to provide the support person it is possible for an additional cost that we can do so - this needs to be organised months beforehand though - so have a think about this when you enter.

Any extra specific nutrition, fresh food and feeding equipment (e.g feedstick if choosing to swim under MSF rules)

A medical certificate certifying fitness for the ULTIMATE swim*

Your mental strength and desire to finish!

*Ultraswim 33.3 will provide a medical certificate template which must be signed by a certified medical professional following an in-person medical

Not sure which event fits you?

START YOUR JOURNEY

Nine short questions, about two minutes of your time. We read your submission, then share information with you to help you select the right event for you.

FAQs

Everything you need to know about the event, the format and booking.

What day of the event will the ULTIMATE swim be?

Normally on the Sunday, with Saturday and Friday as reserve days. You are free to swim the other races on the other event days (Friday-Monday), as you wish.

What happens if the weather is bad, is there a risk like many other long distance challenges that I don't get to swim at all?

This risk is very low as we have three days to be able to achieve this swim - in the worst case scenario where the crossing is not possible we will endeavour to do an equivalent distance on the protected side of the lake (but no guarantee).

How experienced does my support person need to be?

They will need to be practiced and comfortable managing your nutrition and feeding regime (generally swimmers are feeding every 30 minutes on such swims, we can provide more advice on this), and equally have experience on how to maintain both safe distance and correct protection for the swimmer to ensure the skipper acts as you require them to. Let us know at the time of application if you do not have a support person, we may be able to provide experienced support for a supplement

How fast do I need to swim?

With just post mid-summer daylight hours, the minimum average pace required will be 2.3km/h for the ULTIMATE - if you cannot hold this pace, you will need to exit the water when asked. Allowance will be made for adverse current and conditions, with start / finish times adjusted accordingly. Swimming is not permitted after nightfall.

Can I bring more than one person with me?

Yes, the boat that will be dedicated to you will have the space for up to 3 support crew

THE ULTIMATE NON-stop CHALLENGE AWAITS

ULTIMATE: WHAT WE WILL PROVIDE

ULTIMATE: WHAT YOU NEED TO PROVIDE

START YOUR JOURNEY

FAQs

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